cached.py 文件源码

def get_template_sources(self, template_name, template_dirs=None):
        for loader in self.loaders:
            args = [template_name]
            # RemovedInDjango20Warning: Add template_dirs for compatibility
            # with old loaders
            if func_supports_parameter(loader.get_template_sources, 'template_dirs'):
                args.append(template_dirs)
            for origin in loader.get_template_sources(*args):
                yield origin